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Renea nickel, also known as skeletal nickel is a solid microcrystalline porous nickel catalyst used in chemical processes for hydrogenation or hydrogen reduction of organic compounds
Close up of an exhaust pipe of a car, environmental pollution
The core of each catalytic converter is an internal ceramic honeycomb structure that has a washcoat containing platinum (Pt), palladium (Pd), and rhodium (Rh).
The exhaust system in the car seen from below, the car is on the lift in the car workshop.
old catalyst repair

Free stock photoscatalyst (111)